Grate



Aug.l 6, 1935.

E. RINFRET GRATE 3 Sheets-Sheet l Filed Nov 15, 1935 E. RINFRET Aug. 6, 1935.

@RATE Filed Nov. 13, 1933 3 Sheets-Sheet 2 Aug. 6, V1935. El RlNFRET 2,010,527

GRATE Filed Nov. l5, 1935 5 Sheets-Sheet 5 Patented Aug. 6, 1935 7112 gaat110111264711. l

, 'Thepresentvinvention .relates sto. improvements in grates `for furnaces and its ^main''objeotds to :provide aggra'tethat will burnlsoftcallwlthout smoke; .reduce ashes to la minimum due to Aits eicient combustion," and naturally econornize `in coal consumption.' Af further -obje'ct :is to' Vmak'e a vgrate of `the conetype*` that cheap-and simplekto manufacture,'and one that lxiiaybe alternately ldumpedor shaken.' Another tobject is to :provide a `grate of `this characterfwhichf may be usedjequally 'in rectangular orlintcircular types of furnaces; and another 'Objectis to make a grate'in which -th`e rashes lwill `not Vr'en'ia'inland clog-inthe bottom`,'as is usually the case in grates of this type.

The invention mainly consists of a grate formed of oblique-side-walls suitably supported within the fire-box of a furnace, so that the air will circulate therearound and through said sidewalls, the bottom or central open portion there of being closed by a dome-like member which is mounted upon a ball-joint so that it may be dumped or simply shaken as the case may be. In large sized furnaces, a movable circumferential grate is provided around said dome-member, said movable grate being adapted to be shaken simultaneously with said dome-member.

In the accompanying drawings:

Fig. 1 is a top view of the grate, part of it being broken away to disclose the structure;

Fig. 2 is a side elevation View of the grate, showing the guideway for shaking and dumping the dome-member;

Fig. 3 is an enlarged vertical section through Y the dome-member and support therefor;

Fig. 4 is a segmentary top view of the domemember and movable grate;

Fig. 5 is an enlarged top view of a portion of the circular supporting member upon which the side-Walls of the grate are mounted, and

Fig. 6 is an enlarged cross-section through a portion of the sidewall of the grate, the supporting member and movable grate.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 represents the cross-bars which are secured vwithin the rebox of a furnace (not shown) by means of the standards 2 or any other suitable means and upon which is supported and secured the circular-supporting-member 3. The said supporting-member 3 is preferably provided with a plurality of elongated slots 4, through which may project the bolts 5 adapted to rigidly secure the oblique-sidewalls 6 of the grate. The supporting-member 3 as4 wen: as fthe sideiwaust rsf 'the grate should preferably be constructed'in sections, as disclosed in the drawings.

When the side-walls G are 1n fixed'position, an open space, in the bottom, is provided which is `-pri'aferably closed `by the dome-member 1. The saiddome-'nierhber rnay extend to fully iill "said open-space or, vif desired, `may extend over only a' portion thereof',` so asjto `leave a circumferential opening', which, in this case "is closed by a horizontal and movable-circulargrate "member `8, adapted to -inove horizontally and that may be operated simultaneously with said dome-member 1, aswill hereinafter be fully disclosed.`

, The dome-member which may be in the shape of an integral half ball is preferably supported upon the bracket 9 mounted upon the cross-bars I, which has a cup-shaped socket I in which engages the ball-end II of the supporting bracket mounted upon the under-side of said dome-member?! (see Fig. 3 of the drawings). In so mounting the dome-member 1, it will readily be tilted to dump the combustible, as well as horizontally shaken to remove the ashes accumulated in the grate.

For this purpose, an arm I2 is secured to the side of said dome-member, which extends through a semi-circular opening I3 provided through the side-Wall of the grate. The said arm being of rectangular shape will readily be rotated within said circular opening so as to dump the dornemember, but, if it is desired to only shake the said dome-member, the arm I2 is moved laterally to and fro in the horizontal elongated opening I4, that extends from said circular opening I3. The arm I2 being rectangular in shape will prevent it from being rotated, thus avoiding tilting of the dome-member.

The circular grate member 8 is preferably shaken simultaneously with the dome-member by means of a plurality of parallel transverse ribs or projections I which are provided upon its surface, said ribs extending to the lower edges of said dome-member and are adapted to engage corresponding slots or depressions I6 located in the inner .edge of said circular-grate. When the dome-member is moved or shaken horizontally, the ribs engaging said depressions will accordingly move said circular-grate horizontally, thus causing any ashes that usually accumulate at this point, to fall through the openings I 'I provided in said circular-grate.

The transverse ribs located upon the surface of the dome-member will serve also another ob ject, than to actuate the circular grate 8. When integral with the supporting member 3 but thisv A longitudinal recess 20` is provided in which slidably engages the outer edge of the circular-grate 8 and in which it is is naturally optional.

suitably seated, the lower end of the side-wall 6 of the grate extending above same, to form a` channel or guideway in which it is movably held.

The opposite side of said circular grate 8 isl supported by the rail I8, which is tapered to reduce friction, and upon which it slides. The rear edge of the said suporting member 3 may be groovedin or recessed longitudinally at 2| (see Fig.`6 of the drawings), for the purpose of economy in material.

It should be understood that only the essential features of the grate according to the invention are herein described and illustrated in the accompanying drawings, and that modifications may made without departing from the spirit and scope of the following claims of novelty. Y Y

For instance, without departing from the spirit of the invention, by slightly altering the shape of the dome-member as well as the shape of the circular-grate 8, this improved grate may be used in rectangular furnaces.

What I claim as my invention is:-

1. A grate of the character described, comprising side-walls and a dome-member movably mounted at the bottom thereof between said sidewalls, means for shaking said dome-member, said dome-member having a plurality of transverse ribs located upon its surfacea horizontal grate located between the edges of said dome-member and theinner side of said side-walls, said horizontal grate having disposed around its inner edge a plurality of slots in which register the ribs provided upon said dome-member, whereby, when said dome-member is shaken horizontally, said horizontal grate will be simultaneously actuated.

2. A grate of thecharacter described comprising side walls, a dome-member movably mounted at the bottom thereof between the side walls and spaced therefrom, means for shaking and dumping said dome-member, a horizontal ringgrate movably mounted between the lower edges of the dome-member and the inner side of the side walls of the grate, means to support the horizontal grate and cooperating means carried by the dome-member and ring grate whereby the dome-member and ring grate will be simultaneously shaken and said cooperating means permitting dumping movement of the dome-member independently of the ringgrate, said cooperating means including upstanding ribs carried by the dome-member and spaced notches in the inner edge of said ring grate for reception of said ribs.

v ERNEST RINFRET. 

